Trouble - shooting method of automobile alternator

Symptom: When the engine is activated, it can sometimes run the engine to start, sometimes not run the engine can not start.

Troubleshooting:

Symptom is the time to start the engine, sometimes the engine can start the engine to start; sometimes do not turn. In the starter does not turn, the electromagnetic switch has a suction "despair, click" sound.

Maintenance, first check the battery, to confirm its sufficient power. Then remove the starter from the engine and disassemble it. Inspection found that its four brushes over-wear, commutator surface has obvious burning marks. Due to poor contact between the brush and the commutator, resulting in the start of the machine when the turn does not turn the fault. With the lathe to restore the surface of the commutator, and then replace the four new brushes, the engine will be installed after the test. At this time to start the motive, starter normal drive the engine, the engine is also a smooth car. The fault is completely eliminated.

Symptom is the same. In the starter can not be normal rotation, the performance of power decline.

Maintenance, first check the battery, to confirm its sufficient power. The engine was then removed from the engine and the front sliding bearing of the starter was removed from the bearing bore on the engine scoop during the disassembly. The starter rotor has lost its support due to damage to the front bearing, resulting in a decrease in the rotor load, so it is sometimes impossible to drive the engine.

Take a new copper sliding bearings, according to the process requirements in the engine after the scoop on the bearing hole, then the starter to do routine maintenance after loading test. At this time to start the motive, starter normal drive the engine, the engine is also a smooth car. The fault is completely eliminated.

Symptom is the same. In the starter is not running, the electromagnetic switch is not "despair, despair" pull sound.

Maintenance, first check the battery, to confirm its sufficient power. In the cabin on the right side of the battery to find the starter electromagnetic switch drive line, the connector off. From the battery directly to the fire line connected to the electromagnetic switch drive line, this time the engine to drive the engine. The initial judgment may be the ignition switch start contact contacts sometimes contact bad and cause the above failure. Dress up a new ignition switch, then start the machine, the starter fully restored the normal function. The fault is completely eliminated.

Symptom is the same. The symptoms showed no regularity.

Maintenance, first check the battery, to confirm its adequate power. Then remove the starter from the engine and disassemble it. In the disintegration process, found the machine has nylon debris, carefully observed that the nylon fork fork support frame has been broken. As the support frame in the installation hole, not disintegration, although the rupture can still maintain the prototype, but sometimes lost support function, resulting in the failure.

Take a new fork assembly to start the engine and then load the test. At this time to start the engine, the engine normal drive engine running, the engine is also a smooth start. The fault is completely eliminated.

Symptom is the same. But the obvious symptoms are in the start of the motor when the electromagnetic switch suction and re-play, frequent action.

Maintenance, first check the battery, to confirm its adequate power. Then remove the starter from the engine. From the failure phenomenon analysis of the electromagnetic switch sucking coil work properly; and keep the coil work exception. The electromagnetic switch from the starter removed, the test really keep the coil circuit. Take a new electromagnetic switch on the starter, and then put the starter into the car test. At this time to start the machine. The starter normally drives the engine to run and the engine is running smoothly. The fault is completely eliminated.